Launcher - When dragging a browser tab from either Firefox or Chromium,- both of these web browsers should highlight as valid drop receptacle (if- they are in the Launcher)+ both of these web browsers should highlight as valid drop receptacles+ (if they are in the Launcher)

Hello,
as part of the bug clean up ahead of 16.04 LTS, I'm marking this as invalid because it affects an Ubuntu release which is now unsupported. If you can still recreate this bug in a supported release, please do open a new bug and we can triage it for consideration in the 16.04 LTS development cycle.